What Are The Main Similarities And Differences Between DNA And RNA?

The chemical structure of RNA is very similar to that of DNA, but differs in three primary ways:

DNA

RNA

Double-stranded

Single-stranded. By, complementary base pairing can form intra-strand (i.e., single-strand) double helixes, as in tRNA.

Longer chain of nucleotides

shorter chain of nucleotides

Sugar is deoxyribose

Sugar part is ribose which has a hydroxyl the group in the 2′ position of the pentose ring

More stable

The hydroxyl groups in the ribose backbone make RNA less stable

Complementary base pair of adenine is -thymine

– is uracil

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